CVE-2026-73666 json
OpenChoreo: Unauthenticated Backstage developer-portal API exposes OpenChoreo catalog data, scaffolder logs, and allows unauthenticated catalog write/delete
published 2026-08-13 2 mo ago modified 2026-09-08 2 mo ago also EUVD-2026-58543
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
OpenChoreo is a developer platform for Kubernetes. Prior to 1.0.4, 1.1.4, and 1.2.1, the OpenChoreo Backstage backend hardcoded backend.auth.dangerouslyDisableDefaultAuthPolicy and auth.providers.guest.dangerouslyAllowOutsideDevelopment to true, exposing /api/* without authentication and allowing unauthenticated catalog reads, scaffolder log reads, and catalog location creation or deletion. This issue is fixed in versions 1.0.4, 1.1.4, and 1.2.1.
Patch / fix
- github.com/openchoreo/backstage-plugins@114a215 commit
- github.com/openchoreo/backstage-plugins@dfa3fc8 commit
- github.com/openchoreo/backstage-plugins@f6df89c commit
- github.com/openchoreo/backstage-plugins@fdaceeb commit
- github.com/openchoreo/backstage-plugins#709 pull request
- github.com/openchoreo/backstage-plugins#712 pull request
- github.com/openchoreo/backstage-plugins#713 pull request
- github.com/openchoreo/backstage-plugins#716 pull request
- github.com/openchoreo/backstage-plugins/releases/tag/v1.0.4 release
- github.com/openchoreo/backstage-plugins/releases/tag/v1.1.4 release
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
Affected products
- openchoreo backstage-plugins
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
- github.com /openchoreo/backstage-plugins/pull/709
- github.com /openchoreo/backstage-plugins/pull/712
- github.com /openchoreo/backstage-plugins/pull/713
- github.com /openchoreo/backstage-plugins/pull/716
- github.com /openchoreo/backstage-plugins/commit/114a215689924b917da5fd28c56e679aaccaef07
- github.com /openchoreo/backstage-plugins/commit/dfa3fc8bd1ffef1346442c891e3e3dd54bc26501
- github.com /openchoreo/backstage-plugins/commit/f6df89c15834506902b2f706a9e8fbe1f6ef1474
- github.com /openchoreo/backstage-plugins/commit/fdaceeb737938e830c48a150d5bec24f5f487e52
- github.com /openchoreo/openchoreo/security/advisories/GHSA-v7qx-mqhq-grvh
- github.com /openchoreo/backstage-plugins/releases/tag/v1.0.4
- github.com /openchoreo/backstage-plugins/releases/tag/v1.1.4
- github.com /openchoreo/backstage-plugins/releases/tag/v1.2.1
Sources
- CVE List CVE-2026-73666
- NVD CVE-2026-73666
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.